Charles h



'To all whom it may concern:

vin the county of Onondaga, and

door, with a cavit-y on its. inner bulb of the thermometer.

O represents the thermometer.

A s seen in g. 2, the bulb is exposed to the heat in the oven throughthe orifice d. A

@ani-ea ,e

CHARLES H. FINN, or sYRAcUs'nNEW YORK tat-ee @wat Massese We LenersPatent No. 85,e09, dazed Jammmy 12, 1869.

OVEN-DOOR.

' rhe Schedine ferm-ed w in time Letters Parent and making par; of thsame Be it known that I, CHARLES H. Fnmglof Syracuse, Stateof New York,have invented a new and useful Improvement inOvens; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable those skilledin the art'. to lmake and. usethe same,

.referenccbeing Ihad to the accompanying drawings,

forming part of this specification.

The object of this invention is to provide means 'ibr determining, atall times, the temperature -of bakingl ovens, of cooking-stoves, andovens in other situations;

and

It consists in the construction of -the oven-door to receive athermometer, in such a manner that the bulb of the thermometer shall beinside the oven, while the scale and tube shall be on the outside of thedoor, or

.visible tothe eye.

The drawing- Figure 1 representsa side view of an oven-door, with athermometerattached, according to my invention.

Figure 2 is a vertical cross-section of iig. l, through the line x x.

Similar letters of reference indicate corresponding parts.

A is the door. B is a bulge or protuberanee on the outside of the side,to receive the door, in connection with the scale j, as seen in thedrawing, so that the height of the mercury is at all times visible.

By the use of thev thermometer, the proper temperature for baking bread,pies, meats, and other articles,

canfbe obtained before the articles toLbe baked are put into the oven;

Articles are Yfrequently spoiled in the oven for the want of properattention to thejtemperature.

-Too 10W or too high a temperature is invariablyl injurious. l

With the thermometer arranged according to my invention, the exactdegree of heat necessary for the purpose may be obtained.

Exposing certain articles to a certain temperature for a given lengthof' time will producea uniform result. IA claimV as new, and desire tosecure' by Letters The oven-door, constructed as described, with thehollow bulge B, communicating with the oven through the aperture d, andadapted t'o'receive and protect om accident the bulb of the thermometer,whose stem extends upon the outside-of the door, said bulb receiving the-heat from the interior ofthe oven through the aperture d, as hereinshown and described.

CHARLES H. FINN. l Witnesses:

` R. RAYNOR,

J Arms Fom, M. YD.

